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Finding the Fourth Proportional to 123,176.31, 169,983.56 and 66,587.68

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Solution

The fourth proportional to 123,176.31, 169,983.56 and 66,587.68 is: 91,891.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,176.31 : 169,983.56 = 66,587.68 : x
  2. Step 2: Convert to fraction form
    123,176.31/169,983.56 = 66,587.68/x
  3. Step 3: Cross multiply
    123,176.31x = 169,983.56 × 66,587.68
  4. Step 4: Simplify right side
    123,176.31x = 11,318,810,898.54
  5. Step 5: Solve for x
    x = 11,318,810,898.54/123,176.31
  6. Step 6: Final answer
    x = 91,891.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.